Steam-trap.



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STEAM I'RAP.

PPLIQATION FILED Dnc. 9. 19o2.

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UNITED STATES l PATENT CFF-ICE.

LOUIs E. FULTON, OF PITTsURe, PENNSYLVANIA, AssIGNOR TO TI-IE CIIAPLINT FULTON MANUFACTURING COMPANY, OF PITTsBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

STI-:AlvI-TRAF.V

SPECIFICATIQN forming part ofjnetters Patent No. 726,155,01etea April 21, isos.

Application filed December 9, 1902. Serial No. 134.503. (No model.)

To @ZZ whom it may concern:

Be it known that I, LOUIS B. FULTON, ot'

Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Steam- Traps; and I do hereby declare' the following to be a full, clear, and exact description of the invention,.such as will enable others skilled in the art to which it a'ppertains'to make and use the same.

The primary object of this invention is to trolled by a valve which is automatically periodically unseated by pressure taken from within the trap itself, such pressure unseating the valve as against the pressure of the discharge water, by which the valve is normally held to its seat.

A further object is to provide a trap of this character composed of but few parts and which will be automatic and positive in operation.

The invention will'behereinafter fully set forth, and particularly pointed out in the claims;

In the accompanying drawings, lFigure 1 is Fig. 2 is-a transverse sectional View through the ValVe-casinglwith portions' 'of ,the'trap-casing, broken aw'ay. vFig. `Bshowsa slight modication. Fig. 4 shows a modied form of pressure-controlling valve.

Referring to the drawings,`l designates the trap-casing, having a removable top 2 and a side inlet-opening 3. The outlet-opening is connected by an elbow l to a discharge-pipe 5, and fromthis outlet-opening extends a per- 'pendicular pipe 6, arranged centrally within 'bucket 7 is movable up and down within the casing, being guided in its movements by the pipe 6, which is tclescoped by the tube 8.l This pipe 6, together with the tube 8 and pipe l0, constitutes the Water passage-way between the bucket and the discharge-pipe. The bucket is pivotally suspended by a link 12 from an arm 13, mounted on a cross-shaft 14, journaled in the sides of an extension of the topr 2. This arm carries a tappet 13a, shown in the form of a screw, extended through an openingin top 2 into a valve-casing 15. Within this casing'is a longitudinally-movable pressurecontrolling valve 16,' having two guiding portions 17 at each side of its open center, one of these guiding portions being grooved longitudinally and formed with a reduced extension v18, designed to be seated over anoutlet-port tics of a valve of the kind pointedA out in Letters Patent of the United States No. 662,488, issuedmto me November 27, 1900-that is to say, the valve is normally seated by pressure against'its' under side and is held awayfrom its seat in emptying the trap by pressure acting downwardly thereonkin opposition to the discharge-pressure. The valve-stem 23 engages a piston-like head"2et', movable within a chamber 25 o'nthe valve-casing and normally held at the upper limit of its movement by a spring 26, such spring aiding in holding the valve to its seat. Into this chamber opens a pressure-pipe 27,1eadingfrom the outlet port 19 of the pressure controlling valve 16. This'pressure-pipe.-islconnected iat an intermediate point to the trap-casing' by a valved by-pass 28.

In operation the bucket is normally held elevated, as shown in Fig. 1, under the buoyancy of water within the trap-casing, the valves 16 and 21 being seated'. The Waterin rising .in the trap-casing will overliow into the bucket and its weight will cause the latter to sink, pulling downwardly on the arm 13, and thereby through the action of the tappet effect the unseating of valve 16. This allows the pressure within the trap-casing to pass through the grooved head 17 and out through port 19 into the pressure-pipe and acting upon the piston of the discharge-controlling valve 21 effect the unseating thereof as against spring 26 and the pressure against the under side of the valve. The water within the bucket will be forced through the passage-way into the dischargepipe 5. As soon as the bucket is sufficiently empty to allow it to rise under the buoyancy of the water within the trap-casing the tappet will eect the seating of the pressurecontrolling valve, cutting olf pressure against the top of the piston-like head 2i and allow of the immediate reseating of the dischargecontrolling valve. Thus it will be seen that this latter valve is, as pointed out in my before-noted patent, automatically seated and unseated by pressures acting in opposite directions, one of such pressures being controlled by means operated by the water in the trap-casing.

In the event of the bucket or the pressurecontrolling valve or any of the connecting parts becoming impaired or inoperative pressure may be admitted to the pressure-pipe through the by-pass 28.

The advantages of my invention are apparent. It will be noted that the parts are exceedingly simple and lfew in number, and hence are not liable to readily become deranged.

It is obvious that modilications may be made without departing from the scope of my invention. As shown in Fig. 3, instead of having the inlet to the passage-Way for the Water in the form of a pipe depending at one side of the center of the bucket the central tubular portion of the latter, which telescopes the pipe 6, may itself be telescoped by an outer pipe 29, between which and the said tubular portion 8 the water rises in passing to the outlet-pipe. This pipe 29 is shown as connected at its upper closed end to the arm controlling the tappet of the pressure-controlling valve.

Various forms of valves may be used for controlling admission of pressure to the pressure-pipe. For instance, in Fig. 4 I have shown this valve as itself forming the shaft for the bucket-arm, its seating and unseating being eleclted by a longitudinal motion imparted thereto by a screw 30, engaging a diagonal slot 3l in the end of the bucket-arm. lt is obvious` that as the bucket is lowered the valve will under the engagement between the screw and the slotted end of the arm be moved from its seat, while in the rising of the bucket such valve will be moved in the opposite direction to cut 0E further communication with the pressure-pipe.

I claim as my inventionl. A trap having its casing formed 'with inlet and outlet openings, a discharge-pipe leading from the latter, a discharge-controlling valve within such discharge-pipe, designed to be positivelyseated and unseated by pressures acting in opposite directions, a valve for controlling one pressure medium, abucketwithin the trap-casing, a water passage-way between the interior of the bucket and the dischargeoutlet, such passage-way being movable with the bucket, and means actu ated by the bucket for operating the said pressurecontrolling valve, as set forth.

2. A trap having its casingformed with inlet and outlet openings, a discharge-pipe leading from the latter, a discharge-controlling valve within such discharge-pipe, the seating of such valve being eected by pressure against its under side, a movable body to which such valve is connected, a pressurepipe leading from the trap-casing and opening at its other end adjacent to said movable body, a valve controlling admission to such pressure-pipe, a bucket within the trap-casing, a water passage-way between the interior of the bucket and the discharge-outlet, such passage-Way being movable with the bucket,and means actuated by the bucket for operating the said pressu re-controlling Valve, as set forth.

3. A trap having its casing formed with inlet and outlet openings, a discharge-pipe'leading from the latter, a discharge-controlling valve within such discharge-pipe, designed to be positively seated and unseated bypressures acting in opposite directions, a valve for controlling one pressure medium, a pipe extending perpendicularly from such outlet-opening, a bucket having a central tubular portion telescopin g such latter pipe, a pipe forming in conjunction with the said perpendicular pipe and the said tubular portiona water passage-Way between the bucket and the discharge-outlet, and means actuated by the bucket for operating said pressure controlling valve, as set forth.

et. The combination with the trap-casing having inlet and outlet openings, and the valve in the discharge-pipe, of the perpendicular pipe extending from the dischargeoutlet, the bucket having a central tubular portion telescoping said latter pipe, a second pipe Within thebucket open at its lower end and at its upper end communicating with said tubular portion, a pressure-pipe leading from the trap-casing to the discharge-controlling valve to elect the unseating thereof, a pressure-controlling Valve, a pivoted arm from which said bucket is suspended, and means for actuating the pressure-controlling valve, as the bucket is raised and lowered, as set forth.

5. The combination with the trap-casing having inlet and outlet openings, and the valve in the discharge-pipe, of the perpendicular pipe extending from the dischargeoutlet, the bucket having a central tubular portion telescoping said latter pipe, a second ICO IIO

pipe within the bucket open at its lower end and at its upper end communicating with said tubular portion, apressure-pipe leading fromthe trap-casing to the discharge-con-V trolling valve to effect the unseating thereof,

a pressure-controlling valve, a pivoted arml from which said bucket is suspended, said pressure-'controlling valve 'havingj'an open portion, and a tappet carried by said arm eX- tended into said open portion for effectingy the. longitudinal movements of such valve, as set forth.

6. The combination with the trap-casing, the vertically-movable bucket, and thewater passage-Way movable with the bucket leading from the latter to the discharge-pipe, of

a valve in such pipe normally held seated by pressure against its under side, a pressurepipe leading from the upper portion of said casing to the discharge-controlling valve, aY Valve at the' inlet end of such ,pressure-pipe,` 'means actuated bythe bucket for actuating such pressure-controlling Valve, and a valved by-pass leading from'such casing and opening into such pressure-pipe ata point intermediate the pressure-controlling'valve and:

the discharge-pipe valve, as set forth.

7.1The combination with the trap-casing, the vertically-movable bucket, and the Water passage-Way leading from said bucket to the discharge-pipe, ofv a valve in such pipe, a spring-pressed movable body to which such valve isl connected, a chambered casing' for y such body, a pressure-pipe opening into such chambered casing above the said body, a pressure-controlling valve, a casing therefor in communication with the trap-casing, said' ing witnesses.

A LOUIS B. FULTON.

Witnesses:`

M. B. CHAPLIN, CHAS. W. ToWNsEND. 

